1 files changed, 9 insertions, 0 deletions
diff --git a/README b/README
index e097a7e..00db7d8 100644
--- a/README
+++ b/README
@@ -196,6 +196,15 @@ Class parameters:
   If this variable is set the default repositories list ("main contrib non-free")
   is overriden.
 
+* disable_update
+
+  Disable "apt-get update" which is normally triggered by apt::upgrade_package 
+  and apt::dist_upgrade. 
+
+  Note that nodes can be updated once a day by using 
+    APT::Periodic::Update-Package-Lists "1";
+  in i.e. /etc/apt/apt.conf.d/80_apt_update_daily.
+
 * custom_preferences
 
   For historical reasons (Debian Lenny's version of APT did not support the use